Method and apparatus for displaying the status of a system of tr

Details Method and apparatus for displaying the status of a system of tr Method and apparatus for displaying the status of a system of tr

1987-06-16

1989-03-21

Orsino, Joseph A.

Communications: electrical

Traffic control indicator

Plural intersections under common central station control

340754, 340911, G08G 107, G08G 1096

Patent

active

048147656

ABSTRACT:
The status of the traffic signals is repeatedly monitored. A visual display is presented of the spatial arrangement of the traffic signals in the system. The currently monitored status of the traffic signals is repeatedly represented on the display, spatially coordinated with the display of the respective traffic signals. A plurality of previously monitored statuses is also repeatedly represented on the display, spatially coordinated with the respective traffic signals and a traffic speed progression representation therebetween. The display distinguishes between through green and local green traffic signal status. A comparison is made of the currently monitored status of a traffic signal under consideration with the previously monitored status of the adjacent traffic signals as the latter arrives at the traffic signal under consideration and a separately distinguishable mark represents a discrepancy in the comparison when the previously monitored status is through green.

REFERENCES:
patent: 3764972 (1973-10-01), Siklos et al.
patent: 4167784 (1979-09-01), McReynolds et al.
Obermaier, Anton "The `Green Wave` Rolls On", IEEE Spectrum, Mar. 1977, pp. 75-78.
The Urban Traffic Control System, 9/74.
Canadian General Electric T-200 Central Computerized Traffic Control System Specification 5/86.
ITE Journal Article: "Connecticut Department of Transporation Computerized Traffic Management System" 8/85.

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